/************************************************************************************ 
 * Copyright (c) 2008-2012, Columbia University
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Columbia University nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY COLUMBIA UNIVERSITY ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * 
 * ===================================================================================
 * Author: Ohan Oda (ohan@cs.columbia.edu)
 * 
 *************************************************************************************/

#include <stdlib.h>

#include <Physics/Dynamics/Entity/hkpRigidBody.h>
#include <Physics/Dynamics/Entity/hkpEntity.h>
#include <Physics/Dynamics/Collide/ContactListener/hkpContactListener.h>
#include <Physics/Dynamics/Entity/hkpEntityListener.h>

typedef void (*contactCallback)(hkpRigidBody* body1, hkpRigidBody* body2, float contactSpeed);
typedef void (*collisionStarted)(hkpRigidBody* body1, hkpRigidBody* body2);
typedef void (*collisionEnded)(hkpRigidBody* body1, hkpRigidBody* body2);

class ContactListener : public hkpContactListener, public hkpEntityListener
{
public:

	ContactListener(hkpRigidBody* body)
	{
		body->addContactListener(this);
		body->addEntityListener(this);
	}

	void contactPointCallback( const hkpContactPointEvent& evt )
	{
		if(callback != NULL)
			callback(evt.getBody(0), evt.getBody(1), evt.getSeparatingVelocity());
	}

	void collisionAddedCallback( const hkpCollisionEvent& evt )
	{
		if(startCallback != NULL)
			startCallback(evt.getBody(0), evt.getBody(1));
	}

	void collisionRemovedCallback( const hkpCollisionEvent& evt )
	{
		if(endCallback != NULL)
			endCallback(evt.getBody(0), evt.getBody(1));
	}

	void entityDeletedCallback(hkpEntity* entity)
	{
		entity->removeContactListener(this);
		entity->removeEntityListener(this);
	}

	void entityRemovedCallback(hkpEntity* entity)
	{
	}

public:

	contactCallback callback;
	collisionStarted startCallback;
	collisionEnded endCallback;
};